Voltage generating apparatus for stably controlling voltage
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United States of America Patent
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Sep 20, 2016
Grant Date -
Mar 5, 2015
app pub date -
Aug 27, 2014
filing date -
Sep 4, 2013
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Abstract
A negative bias circuit outputs a DC voltage of a negative polarity. A positive bias circuit outputs a DC voltage of a positive polarity. The DC voltage of the positive polarity is used, for example, as a transfer voltage, and the DC voltage of the negative polarity is used as a cleaning voltage for cleaning toner. A cycle of the clock signal in a period during which the DC voltage of the first polarity is output is longer than a cycle of the clock signal in the period during which the voltage supplied to the load transits from the DC voltage of the first polarity to the DC voltage of the first polarity.
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